update.go 2.7 KB

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  1. package swarm
  2. import (
  3. "fmt"
  4. "time"
  5. "golang.org/x/net/context"
  6. "github.com/docker/docker/api/client"
  7. "github.com/docker/docker/cli"
  8. "github.com/docker/engine-api/types/swarm"
  9. "github.com/spf13/cobra"
  10. "github.com/spf13/pflag"
  11. )
  12. type updateOptions struct {
  13. autoAccept AutoAcceptOption
  14. secret string
  15. taskHistoryLimit int64
  16. dispatcherHeartbeat time.Duration
  17. nodeCertExpiry time.Duration
  18. }
  19. func newUpdateCommand(dockerCli *client.DockerCli) *cobra.Command {
  20. opts := updateOptions{autoAccept: NewAutoAcceptOption()}
  21. var flags *pflag.FlagSet
  22. cmd := &cobra.Command{
  23. Use: "update",
  24. Short: "Update the Swarm",
  25. Args: cli.NoArgs,
  26. RunE: func(cmd *cobra.Command, args []string) error {
  27. return runUpdate(dockerCli, flags, opts)
  28. },
  29. }
  30. flags = cmd.Flags()
  31. flags.Var(&opts.autoAccept, "auto-accept", "Auto acceptance policy (worker, manager or none)")
  32. flags.StringVar(&opts.secret, "secret", "", "Set secret value needed to accept nodes into cluster")
  33. flags.Int64Var(&opts.taskHistoryLimit, "task-history-limit", 10, "Task history retention limit")
  34. flags.DurationVar(&opts.dispatcherHeartbeat, "dispatcher-heartbeat", time.Duration(5*time.Second), "Dispatcher heartbeat period")
  35. flags.DurationVar(&opts.nodeCertExpiry, "cert-expiry", time.Duration(90*24*time.Hour), "Validity period for node certificates")
  36. return cmd
  37. }
  38. func runUpdate(dockerCli *client.DockerCli, flags *pflag.FlagSet, opts updateOptions) error {
  39. client := dockerCli.Client()
  40. ctx := context.Background()
  41. swarm, err := client.SwarmInspect(ctx)
  42. if err != nil {
  43. return err
  44. }
  45. err = mergeSwarm(&swarm, flags)
  46. if err != nil {
  47. return err
  48. }
  49. err = client.SwarmUpdate(ctx, swarm.Version, swarm.Spec)
  50. if err != nil {
  51. return err
  52. }
  53. fmt.Println("Swarm updated.")
  54. return nil
  55. }
  56. func mergeSwarm(swarm *swarm.Swarm, flags *pflag.FlagSet) error {
  57. spec := &swarm.Spec
  58. if flags.Changed("auto-accept") {
  59. value := flags.Lookup("auto-accept").Value.(*AutoAcceptOption)
  60. spec.AcceptancePolicy.Policies = value.Policies(nil)
  61. }
  62. var psecret *string
  63. if flags.Changed("secret") {
  64. secret, _ := flags.GetString("secret")
  65. psecret = &secret
  66. }
  67. for i := range spec.AcceptancePolicy.Policies {
  68. spec.AcceptancePolicy.Policies[i].Secret = psecret
  69. }
  70. if flags.Changed("task-history-limit") {
  71. spec.Orchestration.TaskHistoryRetentionLimit, _ = flags.GetInt64("task-history-limit")
  72. }
  73. if flags.Changed("dispatcher-heartbeat") {
  74. if v, err := flags.GetDuration("dispatcher-heartbeat"); err == nil {
  75. spec.Dispatcher.HeartbeatPeriod = uint64(v.Nanoseconds())
  76. }
  77. }
  78. if flags.Changed("cert-expiry") {
  79. if v, err := flags.GetDuration("cert-expiry"); err == nil {
  80. spec.CAConfig.NodeCertExpiry = v
  81. }
  82. }
  83. return nil
  84. }